Stitch remover



J. BOTNAR STITCH REMOVER Filed Nov. 30. 1923 Patented May Z7, 1924.

Uhiiifl@ @flaip @FFQEM JASON BOTNAB, OF MINNEAPOLIS, NIINNESOTA.

STITCH REMOVER.

Application lcdNovember 30, 1923. PSerial No. 677,672.

To z/Z 107mm t may concern Ee it known that I. plssoN Bornes, a citizen of the United States. residing at Minneapolis, in the county of Hennepin and `State of Minnesota, have invented certain new and useful Improvements in Stitch Removers; and I do hereby declare the following to be a full, clear, and exact description of the inven tion` such as will enable others skilled in the art to which it appertains to make and use the same.

My present invention relates to improvements in shoe repairing machinery and more particularly to an extremely simple and highly eflicient device for removing or pulling stitches from shoe welts, after the stitches which connect the soles thereto have been cut, in preparing shoes to be half soled.

To the above end, generally stated. the invention consists in the novel devices and combinations of devices hereinafter described and defined in the claims.

In the accompanying drawings, which illustrate the invention. like characters indicate like parts throughout the several views.

Referring to the drawings:

Fig. 1 is an inner face view of the invention;

Fig. 2 is an elevation of the same; Fig. 3 is a view principally in section taken on the line 3 3 of Fig. 1. Aon an en larged scale, and also diagrammatically illustrating, by means of broken lines, a shoe positioned in respect to the device to remove the stitches from the welt thereof;

Fig. 4 is a fragmentary perspective view of the tooth-equipped peripheral hand; and

Fig, 5 is a detail View in section taken on the line 5 5 of Fig. d.

The numeral 6 indicates a wheel keyed to a revoluble shaft 7 which. for the purposes of this case. may be assumed to be mounted on a shoe finishing machine. The periphery of the Wheel 6 is bevelled toward the inner face thereof and said inner face is dished at 8. On the bevelled periphery of the wheel 6 is a removable correspondingly formed relatively thin band 9 held in position by a plurality of circumferentially spaced screws 10. Circumferentially spaced stitch removing teeth 11 are eut and pressed from the peripheral band 9 and extend obliquely to lines radiating from the aXis of the wheel 6.

It is important to note that adjacent teeth 11 diverge alternately toward opposite sides of the wheel 6. It will also be noted that the edges of said teeth are curved outward from the band 9. r

In the use of my improved stitch-removing device, the stitches m, which secure the 80 sole of the shoe y/ to the welt thereof, are first cut therebetween, and thereafter the shoe is held as diagrammatically indicated in Fig. 3 so that the teeth 11 will engage the transverse portions of the cut stitches at the outer face of the welt. The purpose of alternately divergingadjacent teeth -11 is to cause said teeth to first strike the stitches on one side and then on the other so as to loosen and at the same time pull the same from the welt. In case the teeth 11 become dull, the peripheral band 9 can be easily detached from the wheel 6 and a new bandv substituted therefor.

To prevent the revoluble wheel 6 from 75 rubbing, scratching or otherwise marring the face of the shoe g/ there is loosely `iournaled on the shaft 7. outward of the wheel 6, a disk-like guard 12. This guard 12 is mounted on a reduced hub 13 on the shaft 7 and is S0 held against outward axial movement by a washer 14, and screw 15 having sorew threaded engagement with said shaft. To cause the guard 12 to freely rotate in respect Vto the wheel 6, and at the same time keep A said guard out of contact with said wheel and wabbling movement, there is interposed. between said guard and the dished portion 8 of the wheel 6 roller bearings 16 mounted in a. cage 17. As the wheel 6 is free to rotate in 90 respect to said guard, said guard when pressed against the shoe y/ will remain stationary or be easily rotated under the friction produced between said guard and shoe as the welt of the shoe is moved longitudinally in respect to the wheel 6.

What I claim is:

1. A'device of the kind described comprising a revoluble wheel, and a removable band mounted on the wheel and having stitchl0@ removing teeth that are oblique to lines that radiate from the axis of the Wheel, adjacent teeth diverging alternately toward opposite sides of the Wheel.

2. A device of the kind. descrihedeompiising a revoluble Wheel having on its peripheiy circumferentially spaced stitch- Leeaaee JASON BOTNAR. 

